2.6 Statistical analysis
The differences in the
physiological and biochemical
properties of the V. natans samples among different groups were
determined by one-way ANOVA and Tukey’s test using SPSS 20.0 software
(P<0.05). Detrended
correspondence analysis (DCA) (Canoco 4.5) was used to examine the
correlation between different substrate and
physiological characteristics of the
plant. Since the length of the gradient value obtained by DCA in this
study was less than three, the redundancy analysis (RDA) was further
conducted.